package com.itany.ums.exception;

// 通过继承, 让该类归属到异常体系中
// 让该类的对象可以被throw/throws/try-catch操作
public class UsernameEmptyException extends Exception {

	public UsernameEmptyException() {
		super();
	}

	public UsernameEmptyException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
		super(message, cause, enableSuppression, writableStackTrace);
	}

	public UsernameEmptyException(String message, Throwable cause) {
		super(message, cause);
	}

	public UsernameEmptyException(String message) {
		super(message);
	}

	public UsernameEmptyException(Throwable cause) {
		super(cause);
	}

}
